# MOS Frequencies vs MacDermott Method

The clearest difference is in-app purchases: MacDermott Method at none against MOS Frequencies's 6. MacDermott Method also leads on iOS requirement (15.1 vs 26.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. MOS Frequencies sells 6 in-app purchases, starting at $9.00 per month. MacDermott Method asks for nothing beyond the download.

MOS Frequencies ships an update every 2 months, MacDermott Method every 5 weeks. Both last shipped on October 24, 2026.

## The numbers

| Metric | MOS Frequencies | MacDermott Method |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/macdermott-method/id6466040372/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 2 months | **Every 5 weeks** |
| Monetization | — | Ad-supported |
| Size | 87 MB | 89 MB |
| Requires iOS | 26.0 | **15.1** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Victor Hut](https://appshunter.io/developer/1678994279) | [Kristin MacDermott Method, inc.](https://appshunter.io/developer/1706854963) |

## What reviewers say

### MOS Frequencies

[App page](https://appshunter.io/ios/app/mos-frequencies/id6446777594)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MOS Basic Elements | $9.00 | per month |
| Master of Heart member | $34.99 | per year |
| Master of Heart member | $44.99 | per month |
| MOS Basic Elements | $69.00 | per year |
| MOS Hoofd-Hart Meditatie | $14.00 | one-time |
| MoS Sound Healing | $39.00 | one-time |


### MacDermott Method

[App page](https://appshunter.io/ios/app/macdermott-method/id6466040372)

Enhance family connections and cultivate resilience with evidence-based, bite-sized training. This app supports teen mental health, strengthens parent-child relationships, and promotes self-care for all ages.

**Highlights:** Improve teen mental health, Strengthen parent-child relationships, Build empowered mindset, Bite-sized resilience training, Progress tracking, Offline sync

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is MOS Frequencies free?

MOS Frequencies is free to download, with in-app purchases available.

### Is MacDermott Method free?

MacDermott Method is free to download, with no in-app purchases.

### Do MOS Frequencies or MacDermott Method have ads?

Both MOS Frequencies and MacDermott Method show ads.

### Which is updated more often, MOS Frequencies or MacDermott Method?

MOS Frequencies ships an update every 2 months, and MacDermott Method every 5 weeks. Most recently, MOS Frequencies was updated on October 24, 2026 and MacDermott Method on October 24, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*